Quarter Calculator
Calendar and fiscal quarter of a date, plus its day within the quarter.
Quarter Calculator
| Calendar quarter | Q3 |
| Fiscal quarter | Q1 |
| Fiscal year basis | Fiscal year starts in July |
| Day of calendar quarter | 46 |
August 15, 2026 is in calendar Q3 (its 46th day) but fiscal Q1 for an organization whose fiscal year starts in July.
Find which quarter a date falls in: the calendar quarter (Q1–Q4 of the calendar year) and the fiscal quarter for any fiscal-year start month you choose.
It also reports the day of the calendar quarter — how many days into the quarter the date sits — which is useful for reporting deadlines and pro-rata calculations.
The formula
Worked example
August 15, 2026 is in calendar Q3 (its 46th day) but fiscal Q1 for an organization whose fiscal year starts in July.
The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.
Frequently asked questions
Which fiscal start months are common?
Governments and companies vary: the US federal fiscal year starts in October, many retailers start in February, and plenty of firms simply match the calendar year with a January start.
How long is a quarter?
Calendar quarters run 90 to 92 days: Q1 has 90 days (91 in a leap year), Q2 has 91, and Q3 and Q4 have 92 each.
Category: Date & Time calculators
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